Pleasant Ridge Water System

What EPA’s and CDC’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves: 540 people
Connections: 180
Water source: Groundwater bought from another system
Based in: Olla, LA
County: La Salle Parish
Owner: Private

The short answer

Nothing in EPA’s and CDC’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. 10 health-based violations since 2016.

What was found

Copper: EPA’s file records a utility’s copper only when it exceeds the action level. The last here was 2.0 ppm, for the period ending Jan. 1, 1994. None since is on file, so it is not counted as a current finding.

Total trihalomethanes (TTHM) and haloacetic acids (HAA5): Louisiana’s yearly averages per water system, as CDC’s Environmental Public Health Tracking Network publishes them, 2020 to 2022, with EPA’s 2012 to 2019 file for earlier years.

Below EPA’s limits2

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

5.2ppb

Highest yearly average, 2020 to 2022

2022 average: 2.0 ppb

Averaged by year, the highest was 5.2 ppb, in 2021, below EPA’s legal limit of 80 ppb. In 2022, the latest year on file, it averaged 2.0 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 97.8 ppb, in 2017, and EPA recorded violations in 2015, 2016, 2017, 2018 and 2019.

What handles it

NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

0.75ppb

Highest yearly average, 2020 to 2022

2022: not found

Averaged by year, the highest was 0.75 ppb, in 2021, below EPA’s legal limit of 60 ppb. In 2022, the latest year on file, it wasn’t found. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 19 ppb, in 2018.

What handles it

No certification claim covers this compound yet.

One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.

Lead

Violations since 2016

Contaminant or rule	Type	Period	Measured	Status
Lead and Copper Rule Revisions	The required inventory of lead service lines was not completed or submitted on time.EPA: LSL Inventory	Oct. 17, 2024	—	Resolved
TTHM	The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average	Jan. 1, 2019 to March 31, 2019	0.1 MG/L	Resolved
TTHM	The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average	April 1, 2018 to June 30, 2018	81 UG/L	Resolved
TTHM	The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average	Jan. 1, 2018 to March 31, 2018	81 UG/L	Resolved
TTHM	The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average	Oct. 1, 2017 to Dec. 31, 2017	104 UG/L	Resolved
TTHM	The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average	July 1, 2017 to Sept. 30, 2017	112 UG/L	Resolved
TTHM	The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average	April 1, 2017 to June 30, 2017	86 UG/L	Resolved
TTHM	The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average	Jan. 1, 2017 to March 31, 2017	82 UG/L	Resolved
TTHM	The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average	April 1, 2016 to June 30, 2016	97 UG/L	Resolved
TTHM	The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, Average	Jan. 1, 2016 to March 31, 2016	87 UG/L	Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 3 monitoring or reporting violations not shown.

What this report can’t tell you

Everything else. Total trihalomethanes (TTHM) and haloacetic acids (HAA5) results here are Louisiana’s yearly averages as CDC publishes them, from 2020 on, with EPA’s national file for 2012 to 2019. Pleasant Ridge Water System’s own annual report, which it must send you every year, has the contaminants this page does not show.
Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.
Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; CDC’s yearly averages for Louisiana cover 2020 to 2022.

Testing your own tap

Pleasant Ridge Water System’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Louisiana certifies.

No lab Louisiana certifies is within 75 miles of the area Pleasant Ridge Water System serves on the state’s list. Some take samples by mail; the state’s page lists them all.

All 48 certified labs for Louisiana

Sources

EPA UCMR 5 occurrence data, file of Oct. 15, 2026
EPA SDWA bulk download (SDWIS federal data), 2026 Q3
CDC Environmental Public Health Tracking Network, yearly averages Louisiana supplied to CDC, 2020 to 2022, read Oct. 8, 2026. TapBuff’s comparisons with EPA’s limits are its own, not CDC’s or Louisiana’s.
EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
Limits and goals: each contaminant’s page, with its EPA source.
How this page is built: methodology.

PWSID LA1059006. Rebuilt from EPA data on Oct. 18, 2026.

Nearby

All Louisiana utilities